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CN-117903162-B - Organic compound, organic electroluminescent device and electronic device

CN117903162BCN 117903162 BCN117903162 BCN 117903162BCN-117903162-B

Abstract

The application belongs to the technical field of organic materials, and provides an organic compound, and the structure of the organic compound is shown as a formula 1. The application also provides an organic electroluminescent device and an electronic device containing the organic compound. The organic compound is used as a main material of the organic electroluminescent layer, can effectively reduce the driving voltage of the organic electroluminescent device, improve the luminous efficiency of the organic electroluminescent device and prolong the service life of the organic electroluminescent device.

Inventors

  • XU XIANBIN
  • YANG LEI

Assignees

  • 陕西莱特光电材料股份有限公司

Dates

Publication Date
20260512
Application Date
20230523

Claims (10)

  1. 1. An organic compound, characterized in that the structure of the organic compound is shown in formula 1: 1 and 2 Wherein X and Y are each independently selected from 、 And one and only one of X and Y is The other is ; R 1 is selected from hydrogen, deuterium, or a structure represented by formula 2; R 2 and R 3 are the same or different and are each independently selected from hydrogen, deuterium or a structure shown in formula 2; And at least one of R 1 、R 2 and R 3 is a structure shown in formula 2; L 1 、L 2 are the same or different and are each independently selected from a single bond, a substituted or unsubstituted phenylene group, a substituted or unsubstituted biphenylene group, a substituted or unsubstituted naphthylene group, a substituted or unsubstituted phenanthrylene group, a substituted or unsubstituted carbazole group, a substituted or unsubstituted dibenzofuranylene group, or a substituted or unsubstituted dibenzothiophenylene group; L 3 is selected from a single bond, a substituted or unsubstituted phenylene, a substituted or unsubstituted biphenylene, a substituted or unsubstituted naphthylene, or a substituted or unsubstituted phenanthrylene; L 4 is selected from single bonds; The substituents in L 1 、L 2 、L 3 are the same or different and are each independently selected from deuterium, fluoro, cyano, methyl, ethyl, n-propyl, isopropyl, tert-butyl or phenyl; L 5 is selected from substituted or unsubstituted phenylene, substituted or unsubstituted naphthylene, substituted or unsubstituted biphenylene, substituted or unsubstituted dibenzofuranylene, substituted or unsubstituted dibenzothiophenylene, or substituted or unsubstituted fluorenylene; The substituents in L 5 are the same or different and are each independently selected from deuterium, fluoro, cyano, methyl, ethyl, n-propyl, isopropyl, tert-butyl or phenyl; Ar 1 and Ar 2 are the same or different and are each independently selected from the group consisting of a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted triphenylene group, a substituted or unsubstituted 9,9' -spirobifluorenyl group, a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, and a substituted or unsubstituted carbazolyl group; Substituents in Ar 1 and Ar 2 are the same or different and are each independently selected from deuterium, fluoro, cyano, methyl, ethyl, n-propyl, isopropyl, t-butyl, phenyl, naphthyl or pentadeuterated phenyl; ar 3 is selected from substituted or unsubstituted phenyl, substituted or unsubstituted naphthyl or substituted or unsubstituted biphenyl; Substituents in Ar 3 are the same or different and are each independently selected from deuterium, fluorine, cyano, methyl, ethyl, n-propyl, isopropyl, tert-butyl or phenyl.
  2. 2. The organic compound according to claim 1, wherein the organic compound has a structure represented by the following formula AA or formula BB: In formula BB, R 1 is hydrogen or deuterium.
  3. 3. The organic compound according to claim 1, wherein, And Identical or different and are each independently selected from the group consisting of: 。
  4. 4. The organic compound according to claim 1, wherein, Selected from the group consisting of: ; L 3 is selected from the group consisting of a single bond or: 。
  5. 5. The organic compound according to claim 1, wherein Ar 3 is selected from the group consisting of: 。
  6. 6. The organic compound according to claim 1, wherein R 1 is selected from hydrogen, deuterium, or a structure represented by formula 2; R 2 and R 3 are the same or different and are each independently selected from hydrogen or a structure represented by formula 2; And one and only one of R 1 、R 2 and R 3 is a structure shown in formula 2.
  7. 7. An organic compound, characterized in that the organic compound is selected from the group consisting of: 。
  8. 8. An organic electroluminescent device, characterized in that the organic electroluminescent device comprises an anode, a cathode, and at least one functional layer disposed between the anode and the cathode, the functional layer comprising the organic compound according to any one of claims 1 to 7.
  9. 9. The organic electroluminescent device of claim 8, wherein the functional layer comprises an organic electroluminescent layer comprising the organic compound.
  10. 10. An electronic device comprising the organic electroluminescent device as claimed in claim 8 or 9.

Description

Organic compound, organic electroluminescent device and electronic device Technical Field The application relates to the technical field of organic materials, in particular to an organic compound, an organic electroluminescent device and an electronic device. Background Organic electroluminescent devices, such as Organic Light Emitting Diodes (OLEDs), typically include oppositely disposed cathodes and anodes, and a functional layer disposed between the cathodes and anodes. The functional layer is composed of a plurality of organic or inorganic film layers, and generally includes an organic light emitting layer, a hole transporting layer, an electron transporting layer, and the like. When voltage is applied to the cathode and the anode, the two electrodes generate an electric field, electrons at the cathode side move to the electroluminescent layer under the action of the electric field, holes at the anode side also move to the luminescent layer, the electrons and the holes are combined in the electroluminescent layer to form excitons, and the excitons are in an excited state to release energy outwards, so that the electroluminescent layer emits light outwards. In the existing organic electroluminescent devices, the life and efficiency are the most important problems, and with the large area of the display, the driving voltage is also improved, and the luminous efficiency and the current efficiency are also improved. Disclosure of Invention The application aims to overcome the defects in the prior art and provide an organic compound, an organic electroluminescent device and an electronic device comprising the same, wherein the organic compound can improve luminous efficiency and prolong the service life of the device. In order to achieve the above object, the first aspect of the present application provides an organic compound having a structure represented by formula 1: wherein X and Y are each independently selected from 、AndAnd one and only one of X and Y isThe other isOr (b); R 1 is selected from hydrogen, deuterium, or a structure represented by formula 2; R 2 and R 3 are the same or different and are each independently selected from hydrogen, deuterium, cyano, halogen group, alkyl group having 1 to 10 carbon atoms, haloalkyl group having 1 to 10 carbon atoms, trialkylsilyl group having 3 to 12 carbon atoms, triphenylsilyl group, aryl group having 6 to 20 carbon atoms, heteroaryl group having 3 to 20 carbon atoms, cycloalkyl group having 3 to 10 carbon atoms or structure represented by formula 2; And at least one of R 1、R2 and R 3 is a structure shown in formula 2; L 1、L2、L3 and L 4 are the same or different and are each independently selected from a single bond, a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, or a substituted or unsubstituted heteroarylene group having 3 to 30 carbon atoms; L 5 is selected from a substituted or unsubstituted arylene group having 6 to 30 carbon atoms or a substituted or unsubstituted heteroarylene group having 3 to 30 carbon atoms; Ar 1、Ar2 and Ar 3 are the same or different and are each independently selected from a substituted or unsubstituted aryl group having 6 to 30 carbon atoms or a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms; The substituents in L 1、L2、L3、L4、L5、Ar1、Ar2 and Ar 3 are the same or different and are each independently selected from deuterium, cyano, halogen, alkyl having 1 to 10 carbon atoms, haloalkyl having 1 to 10 carbon atoms, trialkylsilyl having 3 to 12 carbon atoms, triphenylsilyl, aryl having 6 to 20 carbon atoms, heteroaryl having 3 to 20 carbon atoms or cycloalkyl having 3 to 10 carbon atoms; Optionally, in Ar 1 and Ar 2, any two adjacent substituents form a ring. In a second aspect, the present application provides an organic electroluminescent device comprising an anode, a cathode, and at least one functional layer disposed between the anode and the cathode, the functional layer comprising the organic compound according to the first aspect of the present application. A third aspect of the application provides an electronic device comprising an organic electroluminescent device according to the second aspect of the application. Through the technical scheme, the structure of the organic compound comprises a master nucleus structure of oxazole/thiazolobenzo [ C ] carbazole, and the master nucleus is connected with an arylamine compound and is used as a main body material of an organic electroluminescent layer. On one hand, the benzo [ C ] carbazole has a larger conjugated system and a proper first excited triplet state energy level, and the oxazole/thiazole ring can further increase the conjugated system, can enhance intermolecular acting force after being connected with aromatic amine and improve the carrier mobility of a compound, and on the other hand, the oxazole/thiazole serving as an electron-deficient heterocycle is condensed with the benzo [ C ] carbazole, so that free radical ca